Wood split pulley



(Model.)

D. A. SPRINKLE.

Woon SPLIT PULLBY.

Na 406,067f Patented July 2,1889.

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UNITED STATES PATENT OFFICE.

. DAVID A. SPRINKLE, OF PENNSBOROUGII, VEST VIRGINIA.

WOOD SPLIT PU LLEY.

SPECIFICATION forming part of Letters Patent No. 406,067, dated July 2, 1889.

Application filed January 17, 1889. Serial No. 296,686. (Model.)

To @ZZ whom t may concern.

De it known that I, DAVID A. SPRINKLE, a citizen of the United States, residing at Pennsborough, in the county of Ritchie, State of vest 'Iiig'iliia, have invented certain new and useful Improvements in Icod Split Pulleys, of which the following is a specification, reference being had therein to the accompanying drawings, in which- Figure l is a side view, parts being broken away, of a pulley embodying my invention; Fig. 2, a view ot' one halt of the pulley, about on the linerr not Fig. l; Fig. 3, an edge view, parts being broken away, of the pulley.

illy invention relates to improvements in wood split pulleys in which the rings composing the rim of the pulley are joined together at the ends by dowel-blocks. 'lhe rim, consisting et' two parts, is joined together when put upon the shaft at two places 'l T,

Ydiametrically opposite each other, by a compound tongue and groove, and the pulley-sections are held iirmly in place by bolts passing through and from arm to arm. The arms, two in number, are exactly alike and parallel to each other, one in each sec-tion of the pulley, and fastened in the rim of the pulley by dovetail tenons on the ends of the arms, the tenons being dovetailed on one side only, and rmly held in the corresponding cavity in the rim of the pulley by two wedges, oneinserted from each side of the rim and held in place by the exterior rings of the rim, which are put on after the wedges have been inserted. There are stay-rods extending through and 'from each end of the arms to the rim. These rods are made with an eye in one end and a nut upon the other. rlhe end having the eye in it is inserted in the center of the rim from the inside, and is held in the rim by an anchorbolt passing through the eye and rim ot the pulley from side to side. rlhe anchor-bolts, like the wedges staying the arms in the rim, are held in place by the outer rings, and the other end of stayrod passes through the arm near the end, and is tightened by a nut. At the middle of each arm is a notch so formed as to make an aperture almost square at the center of the pulley where the arms are put toh gether. The aperture contains a hub made to fit it tightly. The hub, like the pulley, is made in two sections, and in each section a concave cavity so l'ormcd as to make an elliptical aperture in the center thereof.

The improvement consists of the novel features and the peculiar construction and combination ot' the parts, which will be hereinaf ter more fullydescribed and claimed.

Similar letters referto similar parts throughout the several views.

The rim N et the pulley is composed of a plurality of rings n, which are joined at. the ends by dowel-blocks L, that pass through the rim from the circumference toward the center of the pulley'. 'lhe stay-rods C are fastened at their outer ends in the rim N by anchorbolts E, which pass transversely through the rim and through eyes in the ends ot the rods and extend to the arms B, passing through the same, and are tightened by nuts a a. The bolts D D, passing through the arms B B, are provided with nuts (l d to hold the two sections ot the pulley together.

.B I3 are the arms, having notches or gains at the center, with sloping sides to receive the halves A, which compose the hub, and are fastened at their ends by dovetail tenons, which are tted in corresponding cavities in the rim, being Inore iirmly held in place by the stay-rods C and the wedges F, as shown in Figs. l and I is the elliptical aperture `formed between the halves of the hub when said halves are separated.

\Vhen adjusting the pulley upon a shaft, tightening the bolts D D causes the elliptical aperture in the hub to adhere to the shaft and the pulley to the hub.

I am aware that prior to my invention wood split pulleys have been made with rims composed ot rings and hubs fitted in gains in the arms. I do not claim such a combination, broadly; but

That I do claim as my invention, and desire to secure by Letters Patent, is-

The herein shown and described pulley, composed ot two rim-sections which are joined at their ends by a horizontal and vertical tongue and groove, cach rim-section comprisin a plurality ot rings that are joined at IOO their ends by doWei-blooks, the tWo arms fastened to the said rim-seetions by bolts and dovctaii tenons and cavities, said arms having notches midway of their ends with slop- 5 ing sides, the hub composed of halves, each half fitting,` in said notches and having sloping sides, and the bolts passing through the said arms for drawing them and the said rimsections together, substantially as and for t-he purpose described.

DAVID A. SPRINKLE. Vitnesses: y

E. D. CLAYToN, C. W. WARNER. 

